The nuclear magnetic moments of the M$ouml$ssbauer isotopes 57Fe and 119Sn

Abstract

A new and accurate determination of the magnetic moment of the 23875 keV excited state of ¹¹⁹Sn is presented. The mean value, μ_e=+(0682±0004) nm, obtained using two different absorbers, Co₂MnSn and Fe₃Sn, is in good agreement with previous measurements. The Heusler alloy Co₂MnSn is suggested as a suitable absorber to be used as a Mössbauer velocity calibration standard for ¹¹⁹Sn, and the line positions are given at 42 K and 300 K. In addition some of the other published data relating to the nuclear moments of both ⁵⁷Fe and ¹¹⁹Sn are clarified.